Desai T, Gigg J, Gigg R. Synthesis of methyl 2-O-allyl-(and 3-O-allyl)-5-O-benzyl-beta-D- ribofuranoside.
Carbohydr Res 1996;
280:209-21. [PMID:
8593636 DOI:
10.1016/0008-6215(95)00308-8]
[Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
D-Ribose was converted into methyl 5-O-benzyl-beta-D-ribofuranoside and this, on tin-mediated allylation, gave a mixture of the 2-O-allyl and 3-O-allyl derivatives which were separated by chromatography. The more polar isomer was characterised as the 3-O-allyl derivative after conversion via 3-O-allyl-5-O-benzyl-1,2-O-isopropylidene-alpha-D-ribofuranose (which was also synthesised from 3-O-allyl-1,2:5,6-di-O-isopropylidene-alpha-D-allofuranose) into the known 5-O-benzyl-1,2-O-isopropylidene-alpha-D-ribofuranose. Methyl 3-O-allyl-5-O-benzyl-beta-D-ribofuranoside was converted into methyl 2-O-allyl-5-O-benzyl-beta-D-ribofuranoside via methyl 2-O-allyl-5-O-benzyl-3-O-(prop-1-enyl)-beta-D-ribofuranoside.
Collapse